Hand-soldering a few PC boards is surprisingly popular given how many components come only in surface-mount technology (SMT) packages these days, especially when you consider just how small some of ...

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Soldering uses alloys that melt below 840°F to join metals. Molten solder fills the space between surfaces to be joined, adheres to the surfaces, and solidifies. Typical soldering steps include: ...

If you are lucky enough to encounter a piece of homebrew electronics from the 1950s, the chances are that under the covers the components will be assembled on solder tags, each component with long ...